Lancet

A recent meta-analysis published in the American Journal of Clinical Nutrition suggests that coenzyme Q10 is of benefit in congestive heart failure. For those who like the idea that food and nutrients can be excellent medicine, this paper is interesting at the very least. But there is a case to be made that it is far more than that. There is a case to be made that it is, in a word, miraculous.

For resurrection, after all, is a miracle. And according to a paper published in the Annals of Internal Medicine in April of 2000, coenzyme Q10 for heart failure was a dead concept. The authors reported 13 years ago that “coenzyme Q10 has been studied in randomized, blinded, and controlled studies and … these studies have found no detectable benefit” and that “coenzyme Q10 should not be recommended for treatment of heart failure.”

The final nail had been driven into the CoQ10-for-heart-failure hypothesis 13 years ago — and yet now, it’s back. If that’s not a miracle — then what is going on?

First, a bit of relevant orientation. The condition in question here, congestive heart failure, occurs in particular in the aftermath of one or more heart attacks (myocardial infarctions) which cause portions of the heart muscle to die for want of oxygen. Those areas stop pumping, of course, and the whole heart does its job less well.

The pumping efficiency of the heart is routinely measured using ultrasound as the “left ventricular ejection fraction” (LVEF), which, as the name suggests, is the proportion of blood the left ventricle is able to pump out of itself when it contracts. Roughly 55 to 70 percent is considered normal. High values can occur when the heart is stiff and muscle-bound, and tend to mean the heart empties well, but fills poorly. Congestive heart failure is associated with low values.

Continue reading “Building a Better Health Care System: Why the Next Blockbuster Drug Probably Won’t Be a Drug at All”

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